Bookbinding machine



R. P. KUSCH BOOKBINDING MACHINE Sept. 27, 1932.

Filed Marc? 30, 1951 Patented Sept. 27, 1932 UNITED STATES PATENT OFFICE ROY P. RUSCH, OF CHICAGO, ILLINOIS, ASSIGNOB TO W. F. HALL PRINTING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS BOOKBINDING MACHINE Application led latch 30, 1931.

This invention relates to book binding machines and relates particularly to what are known to the trade as perfect binding machines, comprising conveying means for gathered book sections or signatures, 1ncluding clampin means for holding said book sections or signatures in operative position, means for cutting the back edges of said gathered book sections or signatures to form packs of separate leaves, adhesive applying means, means for applying reinforcing strips thereto and means for applying the book covers.

The present invention has particular reference to the adhesive applying means of such machines.

A complete machine of the general type to which the present invention relates-fbut differing therefrom in detail-is shown and described in U. S. Letters Patent No. 1,244,861,

` backs or rear edges of the gathered book secdated October 30, 1917.

As is generally well known to persons familiar with the construction and operation of book binding machines of the type speclfied,

; the adhesive employed for securlng the severed rear edges of the leaves of the book to the binding fabric is of such thick consistency and ows so sluggishly that the adhesive enters between the edges of the leaves but very slightly, if at all, and forms merely an edge contact therewith, the resulting binding being relatively weak and prone to become detached in handling and particularly when parts of the book are bent back on themselves.

The principal object of the present lnvention is to overcome the foregoing objectionable feature by providing adhesive applying means arranged to apply adhesive not only to the rear edges but also to the faces of the leaves adj accnt their rear edges whereby the leaves will be secured together by a strong adhesive bond. v

To attain the objects thereof, adhesive applying means embodying my invention and improvements, comprises the various features, combinations of features and details of construction hereinafter described and claimed.

In the accompanying drawing, in which the invention is fully illustrated,

'the drawing, 1 indicates, diagrammatically,

Serial No. 526,435.

Fig. 1 is a fragmentar ,sectional elevation of a binding machine o the general type to which the invention relates;

Fig. 2 is a fragmentary, top-plan View of the parts shown 1n Fig. 1; and

.Figs 3 and 4 are enlarged, fragmentaryviews illustrating the construction and operaion of glue applying means of my invenion.

Describing the invention with reference to the flexible conveyor of a binding machine of the general type to which the present invention relates, 2 clamping means mounted on s ald conveyor, 3 a pack of gathered book sections or signatures supported by the clamplng. means 2, and 4 is a support or table on whichcertain operative parts of the machine are mounted, as will presently appear.

In accordance with usual practice, the 7o tions or signatures 3 held in the clamps 2 are .severed to separate said sections or signatures into separate leaves by means, not shown, but which readily can be supplied by persons familiar with the art Without a description thereof in detail.

For present purposes we will assume that the book sections or signatures 3 supported 1n the clamps 2 have been thus cut or severed and that the packs shown consist of separate leaves.

In accordance with my invention, I attain the objects thereof by employing separate adhesive vapplying means designated, respectively, as a Whole a, a" each comprisin a pan 5 adapted to contain the liquid adheslve, rotatably mounted in which is an adhesive applying roller which is mounted in such position that its underside will be immersed in the adhesive contained in a pan 5.

Tol effect the object of the invention as it relates to applying adhesive to the faces of the leaves adJacent to the severed rear edges thereof, the adhesive contained in the a "95 paratus a is relatively very thin and fluid so that it will flow readily and positioned between the adhesive applying devices a, a', are rollers 7 and 8 rotatably mounted in bearings formed in supports or pedestals 9 and 100 and 11 and 12 secured in proper position on the base or table 4, rotation being imparted to said rollers from a shaft 13 rotatably mounted in suitable bearings and driven from a suitable source of power, not shown, rotation of the shaft 13 being imparted to the rollers 7 and 8 by a chain belt 14 adjusted to a sprocket wheel 15 onthe shaft 13 and also to sprocket wheels 16 and Idirection of movement of the packs 3, sa1d 17 secured to rotate with the shafts of the rollers 7 and 8, respectively, the relation being such that the top sides of said rollers which contact with the severed rear edges of the packs of leaves 3 will move in a direction counter to the direction of movement of the 1adges of the packs 3 which contact therewit In accordance with my invention, also, the rollers 7 and 8 are mounted in such position that their axes will extend diagonally to the rollers being preferably inclined in opposite directions as best shown in Fig-2. Also, the rollers 7 and 8 are mounted in such relation to the packs of leaves 3 that the edges of the leaves forming said packs will be subjected to more or less pressure, whereby they will be bent or buckled first in one direction by one roller, and then in the other direction by the other roller, the relation being such that a narrow strip of adhesive will be applied to both faces of the leaves of the packs adjacent the edges .thereof which contact 4with said rollers as they pass over the same.. Said rollers will also operate to remove. surplus 'adhesive applied to the severed edges of the in the art without a description thereof in detail.

I claim: .i o

1. In book bindin machinery of the type specified, the com ination of 'conveying means comprising clamping means for supporting gathered book sections or signatures in the form of separate leaves, means for applying adhesive to the rear edges of said packs comprising means for applying an initial `coating of relatively thin, fluid adhesive thereto, a driven roller arranged diagonally to the path of movement of said packs ofv leaves for bending or buckling the rear edges of said leaves to separate the same, thereby operating to apply adhesive to the faces of the leaves adjacent the edges thereof to which adhesive is applied means for applying a second coating of relatively thick adhesive to the severed rear edges of said paratory to applying the bin ing, said driven diagonal roller being arranged between and outside of said glue applying means.

2. Book binding machinery as specified in claim 1, which comprises a plurality of angularly disposed rollers the axes of which are inclined in opposite direction, whereby they will act upon the packs in succession and will bend or buckle the edges of leaves Easslng over them in opposite directions l oth of said diagonal rollers being arran e between and outside of said glue applying means.

In witness that I claim the foregoing as my invention, I aiiix my signature this 24th day of March, 1931.

ROY P. KUSCI-I.

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